I went ahead and did something very stupid. I used the "Install & Patch IOS36" function in MMM, forgetting that it actually proceeds to downgrade IOS15 (which replaces it with a Wii version, not a vWii version). Now whenever IOS15 is accessed for any reason, the entire system freezes. I need someone with a Wii U to dump the vWii stock version IOS15 so that I can rewrite it to my Wii U, and clear instructions on how to do so will be appreciated. Thanks in advance.